[afnog] IPv6 transition mechanism used by ISP

Mon Dec 3 09:06:01 UTC 2018

I will strongly suggest not going to “only” NAT64/DNS64, but instead using 464XLAT, and even not using DNS64 in that case.

If you just use NAT64/DNS64, you have the problems you mention when some apps use literals, old APIs, etc, and you may break DNSSEC. Those problems vanish with 464XLAT.

Recommended reading:

https://datatracker.ietf.org/doc/draft-ietf-v6ops-nat64-deployment/

and also:

https://datatracker.ietf.org/doc/draft-ietf-v6ops-transition-ipv4aas/

Regards,

Jordi

De: Mark Tinka <mark.tinka at seacom.mu>
Fecha: lunes, 3 de diciembre de 2018, 9:42
Para: JORDI PALET MARTINEZ <jordi.palet at consulintel.es>, Diarmuid O Briain <diarmuid at obriain.com>, UIXP Techies <techies at uixp.co.ug>, <afnog at afnog.org>
Asunto: Re: [afnog] IPv6 transition mechanism used by ISP

On 3/Dec/18 09:56, JORDI PALET MARTINEZ wrote:

The list is made from information provided by ISPs or publicly available, so that why there are no many more ISPs (not just in Africa, in other countries).

I think in Africa, dual-stack is being used up to know as you still have sufficient IPv4 addresses … but of course this will change in the next few months.

I can't speak to other ISP's, but I know that from the last ZAPF meeting in Cape Town last month, Ben (Workonline) had the whole meeting running on NAT64/DNS64. I only noticed because my VPN wasn't happy, but all other things worked perfectly, i.e., e-mail, WhatsApp, Instagram, iMessage, e.t.c. Most folk didn't even know it was an IPv6-only conference network.

As SEACOM, we've had NAT64/DNS64 as our transition mechanism since 2014. We deployed a bunch of translators across the entire backbone, in all of our major PoP's (Africa and Europe). These are running on Cisco ASR1006 routers, in production for close to 5 years now. But as you mention, because of the prevalence of IPv4 in Africa, we haven't yet seen anything pushing us hard to fire up any real traffic toward our translators. That said, when the day comes, we will be ready.

I am sure Andrew (Liquid) already has a plan, and I'm certain there are a ton of other ISP's in Africa that either have a plan or are working toward the same.

Mark.

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